期刊
APPLIED SURFACE SCIENCE
卷 600, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2022.154056
关键词
Catalytic oxidation of formaldehyde; Oxygen vacancy; Pt-ZrO(2 )nanoparticles; Strong metal -support interaction interface; Reactive oxygen species
类别
资金
- Strategic Priority Research Program of the Chinese Academy of Sciences, China [XDA23010300, XDA23010000]
- National Science Foundation of China, China [51878644, 41573138, 51708537]
- Plan for National Youth Talents of the Organization Department of the Central Committee
This study introduces a novel Pt-ZrO2 nanoparticles with an oxygen vacancy (V-O) associated SMSI interface for catalytic oxidation of formaldehyde (HCHO) at room temperature, achieving high reactivity and selectivity in generating reactive oxygen species. The constructed interface plays a crucial role in enhancing HCHO removal and conversion efficiency.
Producing the strong metal-support interaction (SMSI) interface and highly reactive oxygen species is a great challenge for catalytic oxidation of formaldehyde (HCHO) at room temperature over supported metal catalysts. Herein, we report a conceptual oxygen vacancy (V-O) associated SMSI interface of Pt-ZrO2 nanoparticles for HCHO catalysis at room temperature, exhibiting interfacial dependent reactive oxygen species (O*) formation. The V-O on the ZrO2 support captures and activates the molecular O-2, then proceeds to generating the reactive oxygen atom (O*) with a lower activation barrier of 0.3 eV. The generated O* tends to link the (1 1 0) surface of ZrO2 and the (1 1 1) surface of Pt as an electronic transmission channel for the selective catalytic oxidation of HCHO adsorbed on the (1 1 0) surface of ZrO2, accelerating the direct generation of formate species and mineralization of HCHO. The Pt-V-O-ZrO2 achieves high HCHO removal and HCHO conversion (> 95%) at 20 degrees C. These findings will consolidate the fundamental theories of room temperature catalytic reactions via constructing the SMSI interface engineering for wide environmental applications.
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